论文标题
联合缩短和穿刺对结构化的LDPC代码的优化
Joint Shortening and Puncturing Optimization for Structured LDPC Codes
论文作者
论文摘要
对灵活宽带无线服务的需求使修剪技术，包括缩短和穿刺，这是错误纠正代码的必不可少的组成部分。可以通过基础 - 膜或原理对结构性低密度均衡检查（LDPC）代码进行修剪过程的分析（LDPC）代码的分析。在这封信中，我们通过使用基于外在信息传输（PEXIT）的原理来评估修剪基碱膜的阈值。我们还提供了一种优化修剪模式的有效方法，该方法可以显着改善全长模式和子图案的阈值。数值结果表明，由改进的模式修剪的结构化LDPC代码优于现有模式的模式。
The demand for flexible broadband wireless services makes the pruning technique, including both shortening and puncturing, an indispensable component of error correcting codes. The analysis of the pruning process for structured lowdensity parity-check (LDPC) codes can be considerably simplified with their equivalent representations through base-matrices or protographs. In this letter, we evaluate the thresholds of the pruned base-matrices by using protograph based on extrinsic information transfer (PEXIT). We also provide an efficient method to optimize the pruning patterns, which can significantly improve the thresholds of both the full-length patterns and the sub-patterns. Numerical results show that the structured LDPC codes pruned by the improved patterns outperform those with the existing patterns.
